2 Peter 1:8-10

8 For if these things are yours and abound, they make you to be not idle nor unfruitful to the knowledge of our Lord Jesus Christ.  9 For he who lacks these things is blind, seeing only what is near, having forgotten the cleansing from his old sins.  10 Therefore, brothers, be more diligent to make your calling and election sure. For if you do these things, you will never stumble.